How do I convert a .m with unsupported in-built MATLAB functions to C++

Hi everyone.

I'm currently trying to convert a MATLAB script to C++ but MATLAB Coder gives some errors saying some functions are unsupported in the code conversion.

Below are the unsupported functions

fullfile is not supported for code generation
com.mathworks.toolbox.coder.screener.ScreenerError@ca978627	

imageSet is not supported for code generation
com.mathworks.toolbox.coder.screener.ScreenerError@36c733bd

partition is not supported for code generation
com.mathworks.toolbox.coder.screener.ScreenerError@b1e1e753

bagOfFeatures is not supported for code generation
com.mathworks.toolbox.coder.screener.ScreenerError@3e7efb02	

encode is not supported for code generation
com.mathworks.toolbox.coder.screener.ScreenerError@31cdf3a9	

bar is not supported for code generation
com.mathworks.toolbox.coder.screener.ScreenerError@83fd9938	

Answer 1

[Harsh]

Hi Crownie,

For the functions which are not supported for code generation in MATLAB, please follow the below steps:

• If you are generating MEX files, you can declare the unsupported function as extrinsic using “coder.extrinsic”. This tells the code generator to bypass code generation for that function and instead use the MATLAB engine to execute it. For more information regarding “coder.extrinsic” please refer to the following documentation – https://www.mathworks.com/help/coder/ref/coder.extrinsic.html
• For standalone code generation, you can manually implement the unsupported function using MATLAB code that is supported for code generation.